Windows Support

[TomFreeman]

Slightly mega PR adding support for both windows, and debugging in vscode.

If necessary, I could unpick the debugging changes, or submit them separately.

Highlights of changes:

• [ ] addition of ts-node, and changes to /bin/cli to launch with ts-node if src repo is available (debugging support)
• [ ] addition of .vscode/launch.json file to specify debug configurations (debugging support)
• [ ] addition or rimraf and cross-env packages, and some tweaks to packages.json to make all scripts run x-plat (windows support)
• [ ] Addition of upath package, and replace path across the whole package with upath, and occasionally explicitly call upath.toUnix to convert file paths to unix paths (windows support)

Tested on windows 10, and ubuntu.

[j-d-carmichael]

In general, it looks great and thanks again for the effort and commitment!

There was a PR that came in just before yours which is now tested and released, if your could merge in these changes as there appears to be a few conflicts.

The dev mode in the cli is cool, but unless i'm mistaken there needs to be an entry in the .npmignore for that to work.

Other than that, it looks good!

[TomFreeman]

Have resolved the merge conflicts and updated the npm ignore. Seems the built package still works.

[j-d-carmichael]

All merged and released @TomFreeman - thank you for the effort, much appreciated!